Machine for making corrugated paper-board.



PATENTED FEB. 14, 1905.

J. N. HAHN MACHINE POR MAKING CORNUGATED PAPERl BOARD.

APPLICATION FILED 00T. 28, 1904.

Z SHEETS-SHEET 2.

WJTNESSES.-

H f7 Mw TTORNEY.

YNo. 782,559,

UNITED STAT-Es Patented. February 14, 1'905.

PATENT OFFICE.

JOHN N. HAHN, OF CLEVELAND, OHIO.

MACHINE FOR MAKING CORRUGATED PAPE-BOARD.

SPECIFICATION forming part of Letters Patent No. 782,559, dated February14.-, 1905.

Application filed October Z8, 1904. Serial No. 230,311.

T0 all Loh/0m it may concern:

' Be it known that I, JOHN N. HAHN, a citizen of the United States,residing at Cleveland,` in the county of Cuyahoga andv State of Ohio,have invented certain new and useful Improvements in Machines for MakingCorrugated Paper-Board; and I do declare that the following is a full,clear, and eXact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the' same.

My invention relates to a machine for making corrugated paper-board; andthe invention consists in an improvement upon the machine embodied in myapplication for Letters Patent, filed June 16, 1904, Serial No. 212,845.In the said machine two series of ironing-rollers, one over the other,is employed; but there is nothing' in the space between the rollersadapted to bear upon the paper-board and hold the sides thereof togetherwhile the operation of pressing and drying is in progress, and I havefound that said sides are more or less liable to spring apart betweenthe said rollers, especially before the paste thickens and becomesthoroughly adhesive, and this renders the work of the machine more orless defective. Obviously this must be so if the advance rollers aredefeated in their purpose, because there is nothing between them toeconomize their service, and by reason of which there is more or lessloosening or springing apart ofthe sheets between the rollers. Underthese conditions it follows that the advance rollers did not accomplishas much work as they should have done, and this threw the work mostly onthe vrollers toward the rear end of the machine, where the space was toolimited to do the work effectually. For these andy other reasons I havesupplemented the rollers with presser or ironing plates or members,filling the space between rollers and effectually holding the papersheets together in their entire line of travel till the board isfinished, allas hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a side elevation, partlybrokenaway, of my improved machine; and Fig. 2 is a planview of asection or portion of the machine on a line corresponding to a' a', Fig.l. Fig. 3 is a longitudinal sectional elevation of a group of four ofthe n umerous upper and lower rolls or rollers and of the intermediatepresserplates o'r ironing members'which cooperate with said rollers.Fig. 4 is a 4cross-section of the machine on a line corresponding to yy, Fig. 1; and Fig. 5 is a cross-section on a line corresponding to .ee, Fig. 1, immediately in advance of' Fig. 4. Fig. 6 isa cross-sectionof opposed presser-plates and the means for supporting the same; andFig.7 shows a modification of the presser-plate, which is hollow and adaptedto be heated internally with steam or otherwise. Y

The paper-stock which comes to this machine is finished therein as apaper-board, as usual, and consists of an inner transverselycorrugatedand pasted sheet andv plain outer sheets on opposite sides adhered tothe said transverse corrugations or ribs; .but the prod- .uct as such isnot regarded as a new article.

The machine as shown comprises two series of' rolls or rollers A and B,respectively, in parallel lines transversely of the machine, betweenwhich the paper P passes, and the said rolls aresupported in a boXormchamber E,

which is adapted to be heated bysteam-pipes or otherwise for drying thepaper or paperboard as it passes through the machine, the heatingbeingnecessarily done while the rolls are at work. Usually this b'oX orchamber is of a length varying, say, from thirty to fifty feet, agradual drying of the paste being required along with a moderate anduniform pressing of the sides of the paper together.

Each series of rollsA and B has its own supports, the upper seriesl'having bearingblocks C and the lower series bearing-blocks, D. Eachblock preferably is madel to support two rolls, and blocks D rest onledges or supports F in or from the bottom of chamber E, and blocks Care suspended by screws Gr, engaging loose nuts g, housed in blocks Cand by which the elevation of the upper rolls A and their relation torolls B are con-'- trolled. Vertical stay-rods H are provided betweenthe bearing-blocks successively, said blocks havingsemicircular groovesin their edges half-way overlapping said rods on opposite sides, and thesaid rods are screwed IOO down into the base-supports F, thus formingstandards between each two upper and lower blocks successively,betweenwhich said blocks are held, but are removable above, and the upper blockis adjustable, as above described. The upper blocks likewise aresupported on or from these standards by means of yokes or bars L, which,like said blocks, have semi-l on the threaded extremities of screws G.-A. lengthwise shaft N carries worms a, which.'

engage pinions K, and thus all the upper rolls are adjusted or raisedand lowered alike and at the same time to liX their working relation tothe lower rolls. The lower rolls are driven positively and at the samerate of speed by shaft M and bevel-gears m thereon, while the upperrolls run or turn by contact with the paper which is carried along bytheA lower upon the paper.

rolls.

Now coming to the more important feature of the invention as embodied inthe presser or ironing plates or members O, it will be seen that saidplates have fiat smooth bearing-surfaces exposed to the paper P and ofsuch width as to substantially span or bridge the space between therolls at their bearings Obviously the space covered by said rolls incontact with the paper is comparatively small, while the interveningspace is large, 'and hence the great importance of providing this spacewith means which will supplement the work of the rollers and holdtogether the sides of the paper in its transit from roll to roll untilthe entire board is uniformly pressed and completed. To these ends thesaid plates are provided with ribs or flanges 0 centrally on theirbacks, which give them rigidity, and are each fixed to yokes Y at theirends, adapted to hook or rest upon the hubs or bosses g/ of therespective bearing-blocks C and D. The lower yokes rest ed air or thelike to apply the heat directly to the paper-board.

l. Inv a paper-board-making machine, a

series .of presser-rollers and a series of presserplates between therollers.

' 2. In a paper-board-making machine, two parallel series of rollersbetween which the board passes and independent presser-plates betweensaid rollers.

3. The drying chamber and the rollers therein and oppositely-arrangedpresser-plates between said rollers having separate end supports.

4. The drying-chamber and the two ser-ies of rollers therein,presser-plates between said rollers and means for raising and loweringthe upper rollers and presser-plates together,

5. The machine substantially as described having two parallel series ofrollers horizontally, presser-plates between the rollers of each series,vertically-adjustable bearings for the Lipper series of rollers andsupports for the upper series of presser-plates engaged upon saidbearings.

6. In a paper-board making machine, a lower series of rollers and powerconnections to rotate the same, an upper series of rollers and means toraise and lower the entire series simultaneously, and presser-platesbetween said rollers.

7. In a paper-board-making machine, two parallel series of rollers andtwo series of independent presser-plates between said rollers, bearingsfor said rollers one over the other and vertical stays for saidbearings, the said presser-plates supported by said bearings.

8. In a paper-board-making machine, upper and lower series of rollersand a series of bearings at each end for said rollers, vertical stays onwhich said bearings are engaged edgewise and means to suspend the upperseries of bearings from said stays.

9. In a paper-board-making machine, upper and lower presser-rollers andbearings therefor one over the other, a series of vertical staysconfining said bearings, cross-bars on the top of said stays and meanssuspending the upper series of said bearings centrally from saidcross-bars.

l0. In a paper board making machine, a lower series of rolls and anupper series of rolls, bearings for the upper rolls and vertical stayson which said bearings are slidably engaged, cross-pieces at the tops ofsaid stays and screws supported therein and engaging said bearings andadapted to adjust the bear- IOO series of lower power-driven rollers, incombiand presser-plates and means to raise and nation with a series ofsuspended upper rolllower the same together. I0 ers, and means tosimultaneously raise and In testimony whereof I sign thislspecificalower said upper rollers. tion in the presence of twowitnesses. 5 13. In a paper-board-making machine,Y a JOHN N. HAHN.

series of lower powerdriven rollers and a Se- Witnessesz lriesolupperrollersandpresser-platesbetween C. A. SELL,

the same, means suspending said upper rollers R. B. MOSER.

